.main {
    position: absolute;
    width: 850px;
    height: 394px;
    left: 295px;
    top: 130px;
    background: url(./图片\ 7.png);
}

.main::before {
    content: url(./images/left.png);
    position: absolute;
    left: 8px;
    top: 182px;
}

.main::after {
    content: url(./images/right.png);
    position: absolute;
    right: 8px;
    top: 182px;
}
ul ,li {
    list-style: none;
}

/* 把列表位置固定 */
ul{
    position: absolute;
    bottom: 22px;
    right: 30px;
}


ul li{
    float: left;
    box-sizing: border-box;
    width: 8px;
    height: 8px;
    margin-left: 8px;
    border-radius: 50%;
    background: #9995A5;
    border: 1px solid #8E8A97;
    padding: 1px;
}

ul>li.li-last {
    margin-right: 0px;
}

li::before {
    content: '';
    display: block;
    width: 4px;
    height: 4px;
    background: #666278;
    border-radius: 50%;
}

ul>li.third {
    background: #D6D6D6;
}

ul>li.third::before {
    background: #D6D6D6;
}